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afs: Implement shared-writeable mmap

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Implement shared-writeable mmap for AFS.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2017-11-02 15:27:52 +00:00
parent 4343d00872
commit 1cf7a1518a
3 changed files with 54 additions and 9 deletions
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fs/afs/internal.h
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@@ -886,6 +886,7 @@ extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
extern int afs_flush(struct file *, fl_owner_t);
extern int afs_fsync(struct file *, loff_t, loff_t, int);
extern int afs_page_mkwrite(struct vm_fault *);
extern void afs_prune_wb_keys(struct afs_vnode *);
extern int afs_launder_page(struct page *);